“The idea that you aren’t truly safe and that you can never be absolutely sure what’s directly behind you at any moment. You think there’s nothing there, but what if there is? What if there’s some horrible creature stalking toward you, just outside your field of vision, ready to pounce at any moment? What if it’s waiting for the moment you get the courage to turn your head and look?”
—Threedo9
Source: https://www.buzzfeed.com/marycolussi/terrifying-books-reddit